Circulating inflammatory endothelial cells contribute to endothelial progenitor cell dysfunction in patients with vasculitis and kidney involvement.
نویسندگان
چکیده
Impaired angiogenic function has been reported in patients with kidney failure. During vascular damage, endothelial cells may detach from the site of inflammation and be released into the peripheral blood. With the use of Wegener's granulomatosis as a study model, whether circulating inflammatory endothelial cells (IEC) can (1) be used as a disease activity marker and (2) contribute to sustained vascular damage by inducing endothelial progenitor cell (EPC) dysfunction were examined. IEC-defined as endothelial cells that express the two inflammatory-associated markers vascular-adhesion protein-1 (VAP-1) and MHC class I-related chain A (MICA)-were increased significantly in patients with active disease as compared with those in remission. IEC expressed high levels of inducible nitric oxide synthase and neutrophil-activating chemokines, such as macrophage inflammatory protein-1alpha, growth-related oncogene-alpha, epithelial neutrophil activating peptide-78, and IL-8, and induced increased neutrophil migration. IEC levels significantly correlated with C-reactive protein and extent of organ involvement. Patients with active disease had decreased numbers of EPC colony-forming units and a high expression of VAP-1 and MICA in kidney endothelium. EPC did not express VAP-1 or MICA. IEC significantly inhibited proliferation, migration, and endothelial nitric oxide synthase expression in EPC. Thus, apart from being a new disease activity marker, IEC may contribute to vascular damage by impairing the functional capacity for repair by EPC. IEC may provide a unique in vitro system to study pathogenesis of kidney and vascular diseases.
منابع مشابه
Effect of two different intensity of physical activity on circulating endothelial progenitor cells (EPC) in healthy young women
The purpose of this study was to determine the effect of two different intensities of physical activity on circulating endothelial progenitor cells (EPC) in healthy young women. For this purpose, 15 female students from volunteers were randomly selected via questionnaire (group 1: mean age 22 ±1/8 years, BMI 20/81±1/91 kg/m2, n = 8. group 2: mean age 21 ±1/5 years, BMI 20/38 ± 1/66 kg/m2, ...
متن کاملEndothelial Progenitor Cell Dysfunction in Polycystic Ovary Syndrome: Implications for The Genesis of Cardiovascular Diseases
متن کامل
The Effect of Combining Resistance Training and Endothelial Progenitor Cell Injection on the Expression of Angiogenic Factors In Diabetic Male Rats Induced By Stz
Background: Angiogenesis disorders are known mechanisms of diabetes. With the aim of reducing angiogenesis disorders, resistance training and its combination with endothelial progenitor cell injection are new strategies. Therefore, the present study was performed to determine the effect of resistance training with endothelial progenitor cell injection on the expression of angiogenic factors in ...
متن کاملEndothelial dysfunction.
Endothelial dysfunction is characterized by a shift of the actions of the endothelium toward reduced vasodilation, a proinflammatory state, and prothrombic properties. It is associated with most forms of cardiovascular disease, such as hypertension, coronary artery disease, chronic heart failure, peripheral artery disease, diabetes, and chronic renal failure. Mechanisms that participate in the ...
متن کاملSimultaneous Effect of Resistance Training and Endothelial Progenitor Cell Injection on the Expression of Vegf Angiogenic Factor and Its Relationship with Insulin Resistance in Diabetic Male Rats Induced By Stz
Background: Exercise and the simultaneous use of progenitor cells is a new strategy aimed for reducing diabetic disorders. One of the known mechanisms is angiogenic disorders caused by diabetes. Therefore, the present study was performed to determine the simultaneous effect of resistance training with endothelial progenitor cell injection on the expression of angiogenic factors in the skeletal ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of the American Society of Nephrology : JASN
دوره 16 10 شماره
صفحات -
تاریخ انتشار 2005